Electrically-heated radiator



J. H. MILLS.

ELECTRICALLY HEATED RADI ATOR.

APPLICATION FILED APR-5,1920.

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J. H. MILLS.

ELECTRICALLY HEATED RADIATOR.

APPLICATION FILED APR. 5, 1920.

1,40 ,057, Patented Feb. 7, 1922.

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anon Mo's fella; fi ariaiz MiZlfl UNITED STATES PATENT OFFICE.

JAMES HARLAN MILLS, OF GALLIPOLIS, OHIO.

ELECTRICALLY-HEATED RADIATOR.

To all whom it may concern 'Be it known that 1, JAMES HARLAN Mums, a citizen of the United States, residing at Gallipolis, in the county of Gallia and State of ()hiophave invented certain new and useful Improvements in an Electrically-Heated Radiator, of which the following is a specification.

' This invention relates to electrically heated water containing radiators, and has for one of its objects to simplify and 1mprove the Construction and increase the efficiency and utility of devices of this charactor. 7

Another object of the invention is to provide a device of this character in v yich controlling mechanism of improved construction for regulating and equalizing the heat units is installed entirely within the lines of the radiator circulating elements, thereby insuring compactness and, increased 'efiiciency and greater economy in the use of the heat radiated from the conductor elements.

lVith these and other objects in view, the invention consists in certain novel features of construction as hereinafter shown and described and then specifically pointed out in the claims, and in the drawings illustrative of the preferred embodiment of the invention.

Figure 1 is a side elevation partly in section.

Figure 2 is a transverse section on the line 2-2 of Fig. 1.

Figure 3 is a detail view illustrating a modification in the construction.

The improved apparatus comprises a hollow base 10 for the water which is to be employed as a steam producing or heating medium and from which a plurality of conductor tubes 11 extend.

\Vhen the radiator is constructed especially for the installation of the improved devices, the conductor members are in relatively wide spaced relation transversely of the base, as shown in Figure 1, so that the controlling mechanism can be arranged ontirely within the lines of the base 10 and the conductors 11, as shown in Figures 1 and 2, and when the improved device is applied to a radiator having conductor members in relatively close relations, the controlling mechanism will be supported externally of the lines of the base and conductors as shown in Figure 3.

The base 10 is supported by suitable feet or legs 12 and'is formed with an internally Specification of Letters Patent.

Patented Feb. 7, 1922. 1920. Serial No. 371,845.

threaded boss'13, and engaging in the boss 1s a threaded plug 14 carrying a relatively lon tube or casing 15.

lsposed within the. tube 15 is a heating element, preferably in the form of a coil 17 adapted to be electrically heated, the conductor wires 18 and 19 of which pass through suitably insulated The tube 15 is constantly immersed in the Water within the base 10, the latter also extending for a distance into the lower parts of the tubes 11, as shown.

Located upon the base 10 and entirely within the lines of the tubes 11, is a base plate 20 having standards 21 and 2,2 rising therefrom. The standard 21 is designed to support an electric contact device 23, which is connected to one end of the coil 17 by 1 wire 18. Supported by the standard 22 is a lower shell section 24 having an outwardly directed flange 25. The upper section of the shell is represented at 26 and is provided with an outwardly directed flange 27. Disposed between the flanges 24 and 27 is a diaphragm 28, the flanges and diaphragm being connected by clamp bolts or like devices 29.

The upper shell section 26 is connected by a conductor pipe 30 with one ofthe radiator tubes 11 above the highest possible line of the water, or constantly in the steam area.

Extending from the shell section 24 is an internally threaded boss 31 to receive a threaded adjusting plug 32. Slidable through the plug 32 is a rod 33 connected at its upper end at 34 to the diaphragm 28. The rod 33 is surrounded within the shell section 24 by a spring 35 hearing at its ends against the plug 32 and the diaphragm 28, and operating to maintain the latter yieldably in normal position. 1

The plug 32 is,relativel long, so that it can be ad usted to vary t etension of the spring, to correspondingly change its reslstance.

Pivoted at 36 in the standard 22 is a lever arm 37 the latter pivoted at .one'end at 38 to the rod 33 and carrying a contact 39 coacting with the contact 23.

The conductor wire 19 is connected at one end to the contact 39, and the wires 18 and 19 are designed to be coupled to a motor or other source of electric energy, indicated conventionally at 40.

The spring 35 operates to normally hold the diaphragm 28 in neutral position with openingsin the plug 14.

v tinued.

phragm 28 will the contacts 23 and 39 closed to close the circuit through the coil 17 and thus cause the latter to radiate heat in the water, and so long as the heat is normal, the circuit will remain closed and therheating operation con- The heating of the water will generate steam in the tubes 11 above the water and a suitable steam gage, represented at 4.1, is applied to one of the tubes 11, to indicate the steam pressure, while a water gage 42 is attached to the base member 10 to indicate the stageofwater in the device.

If the steam pressure rises above a predetermined de ree, the pressure on the diaforce the latter downwardly and cause the rod 33 to actuate the lever 37 and thus break the circuit through the coll l7 and interrupt the heating operation and permit the pressure to fall.

'hen the pressure again falls to normal, the spring automatically returns the diaphragm 28 and rod 33 to normal position and again closes the circuit and starts the heating operation again. Thus the heat is automatically controlled andrequiresno attention from an attendant.

The water in the,base and tubes does not require replenishing, except to supply the small quantitylost by possible leakage.

The preferred embodiment of the invention is disclosed in the drawings and set forth in the specification, but it will be understood that any modifications within the scope of the claims may be made in the base, a standard carried by the base, a shell connected to the standard and supporting a transverse internal diaphragm,a lever arm pivoted intermediate the ends to said standard, connecting means between said lever and diaphragm, and electric connections be tween said lever arm and the electric heating medium within the shell device.

2. A device of the class described comprising a hollow base having a plurality of circulating devices communicating therewith for holding a charging of water and having a threaded opening communicating with the base, a threaded plug engaging in said opening and having an inwardly opening seat, a

tubular shell supported only in said seat and extending into said shell and removable with the plug, and an electric heating element supported by said plug and extending into said shell.

In testimony whereof, I afiix my signature hereto.

' JAMES HARLAN MILLS. 

